# Vendored XSLT polyfill

Upstream: https://github.com/mfreed7/xslt_polyfill

Pinned revision: `9ee67e848ef8ce2ad3b0bac4814b5a87db38a939`.

`xslt-polyfill.min.js` is the upstream distribution with the local change below, including its
embedded WebAssembly engine. `LICENSE` contains the upstream BSD licence;
`libxml2-LICENSE` and `libxslt-LICENSE` contain the embedded libraries' notices.
Upstream submodule revisions are respectively
`c34742f3017f6d39f3e4ccae4f70172238160ef8` and
`923903c59d668af42e3144bc623c9190a0f65988`.

Zymonic disables the library's automatic XML-page transformation. Initial pages
use server-side rendering; this library supplies the AJAX XSLTProcessor API.
`Zymonic/XSLT.js` waits for `xsltPolyfillReady()` before releasing jQuery ready
handlers. Keep the licence files with the distribution when updating it.

Local change: only construct the native XSLTProcessor for capability detection
when `xsltUsePolyfillOnlyIfNeeded` is true. Forcing the polyfill does not need that
probe, which otherwise triggers Chrome’s native-XSLT deprecation warning.